CUTTING IN CAVITY FORMATION METHOD Russian patent published in 1995 - IPC

Abstract RU 2032069 C1

FIELD: mining. SUBSTANCE: they drill one - two blast-holes, place bottom and main explosive charges in the blast-holes, place additional mouth charge in blast-holes, simultaneously fire bottom and mouth charges in blast-holes, by mouth charge blast action main charge is moved in produced cavity. EFFECT: method is used in mining. 2 dwg

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RU 2 032 069 C1

Authors

Lisikhin V.G.

Bastrjukov A.F.

Dates

1995-03-27—Published

1991-06-03—Filed